Are you trying to unzip the file? You only need to drop the zip file onto the install tab in Sachesi.
Sachesi will unzip and install the correct bar files for your phone.
Be sure to choose "download through your browser" not Mega Sync.

Originally Posted by clear_me

Cannot open the download file. And I hv to repaired it to open. Pls check!

I just loaded the Blitz on my Att Stock Passport. So far so good. This is the only one since att june or july release.

Why did I do it?
Friday I had the second battery nose dive burn on this phone in the morning since I have owned it. I found system at 40% and no time to investigate. Did a hard reset and all was good. I do know that the first time was in the summer during a good amount of travel and music player use. Something caused a big spike and nose dive.
Thursday I had some bad glitches in the phone app. I couldnt close out of it and answer the other incoming call. Did fair amount of traveling today.
Before that I have been suspecting a double type on the keyboard sometimes but had not narrowed down a specific letter or even if I had anything to blame but myself!

First thoughts. I did two reboots to help settle everything and there is a nice increase in performance that includes all apps and OS flow.
The Android runtime is working very very nice for me.

Last thoughts
att is a being a very poor partner here. Holding back this OS update is for sure leaving a negative impression with the owners. People need to do something about this customer ABUSE and NEGLECT.

When it comes to updating my unlocked Q10 with WFC that I purchased directly from BB, I am a slow adaptor. During two previous OS updates of my Q10, I lost my WFC for several months, which is mission critical for me. Since it's not a T-Mobile phone, T-Mobile provide basic help, but never gets involved with any OS upgrade issues. Blackberry Tech service needs a referral from T-Mobile before they will set up a ticket and help me with any OS issues. However I dropped the BlitzOS_10.3.2789 file on the Sachesi window and it immediately began the process of extracting the 245 files, needed for my BB Q10. It then started to install each of the files and rebooted my Q10. As I watched it finalize the boot up process, I noticed, No WiFi Calling. I was crushed. However, I remembered that someone else experienced the same problem, so following their lead, I rebooted my phone and found out that there is life after death. I have my new OS and all its features, and my needed WiFi Calling. Thank you, thank you, thank you.

i have uploaded the 10.3.2.2789 via sachesi 2.0.2 (the 2.0.3 dosn't work for some missing dll file).
my z10 is not working at full. Hub is missing and the keyboard opens but does not type. I am trying to load the os again, but now i am getting an error that i dont have enough memory on the phone.
Pretty much stuck, and i dont know how to re install fresh.
Please help!

@Ali - you should by _no_ means take this as an authoritative answer, but speaking for myself, I would absolutely decrypt the entire phone (including, and especially, your sdram card) before attempting an update. It may not be necessary in the slightest, someone with actual experience with an update on an encrypted phone will hopefully chime in soon... but personally, my feeling is: why take the chance?